JP2021004000A - Slide device of vehicle seat - Google Patents

Abstract

To provide a slide device of a vehicle seat configured to reduce looseness between components to improve operation feeling of a lock mechanism and reduce the number of components.SOLUTION: In a slide device of a vehicle seat, multiple engagement holes 141 aligned in an anteroposterior direction are formed at a lower rail 1. Further, an upper rail 2 is attached with: a handle 5 which may rotate around a rotation axis 52 extending in a vehicle width direction; and a lock member 6 which may rotate around a rotation axis 62, extending in the anteroposterior direction, in a lock direction and a lock releasing direction, has a lock claw 63 which may rotate in the lock direction and engage with the selected one of the engagement holes, and receives operation force applied to the handle to be rotated in the lock releasing direction. The lock member is supported by the rotation axis in at least an anteroposterior position corresponding to an input part 61, which receives the operation force from the handle, or a position near the input part and an anteroposterior position corresponding to the lock claw or a position near the lock claw.SELECTED DRAWING: Figure 1

Description

The present invention relates to a vehicle seat slide device.

For example, the front seat of a vehicle is equipped with a sliding device so that the position in the front-rear direction can be changed. In such a vehicle seat slide device, an upper rail attached to the seat cushion is combined with a lower rail fixed to the floor so as to be slidable in the front-rear direction, and a lock mechanism that can be released by operating the operation handle. Is equipped.

The locking mechanism in the vehicle seat slide device is generally provided on the lower rail with a plurality of engaging holes arranged in the front-rear direction at a predetermined pitch and on the upper rail rotatably while being urged in the locking direction. It is configured to have a lock member that can be engaged with a selected one of the holes and is rotated in the unlocking direction by operating an operation handle arranged at the front of the seat. When changing the position of the seat in the front-rear direction, the operating handle is operated to move the seat in the front-rear direction while the lock member is rotated in the unlocking direction, and the operating force on the handle is released. The lock member is rotated in the locking direction by the urging force to automatically engage with the predetermined engaging hole, and the seat is fixed at the changed front-rear position.

In the vehicle seat slide device shown in Patent Document 1, the operating force of the operation handle that can rotate around the rotation shaft extending in the vehicle width direction is centered on the rotation shaft that also extends in the vehicle width direction. It is configured to transmit to a lock member that can rotate in the vehicle width direction about a support shaft that extends in the vehicle front-rear direction via a seesaw rotatable link member.

In the vehicle seat slide device shown in the same document, the link member is interposed in the process of transmitting the operating force from the operating handle to the lock member, the number of member points is increased, and the play between the members is superimposed. There is a problem that the operability is lowered.

Japanese Unexamined Patent Publication No. 10-264685

The present invention has been devised under the above circumstances, and is for a vehicle configured to reduce play between constituent members, improve the operability of the lock mechanism, and reduce the number of parts. The subject is to provide a seat sliding device.

In order to solve the above problems, the following technical means are adopted in the present invention.

That is, the vehicle seat slide device provided by the present invention includes a lower rail fixed to the floor and an upper rail attached to the seat cushion and movably combined with the lower rail in the front-rear direction. A plurality of engaging holes arranged in the front-rear direction are formed in the upper rail, and the upper rail has a handle that can rotate about a rotation axis extending in the vehicle width direction and a rotation extending in the front-rear direction. It has a lock claw that can rotate in the locking direction and the unlocking direction about the axis, and can rotate in the locking direction to engage with a selected one of the plurality of engaging holes. A vehicle seat slide device to which a lock member that transmits an operating force to the handle and is rotated in the unlocking direction is attached, and the lock member receives at least an operating force from the handle. It is characterized in that it is supported by the rotation axis extending in the front-rear direction at the front-rear direction position corresponding to the input portion or its vicinity and the front-rear direction position corresponding to the lock claw or its vicinity.

According to the above configuration, since the operating force on the handle is directly transmitted to the lock member, the intermediate link member between the handle and the lock member can be omitted, and the number of member points can be reduced. In addition, the play that occurs in the transmission of the operating force between the members does not overlap more than necessary, and a direct operating feeling can be obtained.

Further, since the lock member is supported by the rotation axis at at least two places in the front-rear direction, that is, the input portion that receives the operating force from the handle or its vicinity and the lock claw or its vicinity, the lock member is supported in the front-rear direction. Even in the case where the length has to be relatively long, it is possible to perform rotation with less rattling around the rotation axis, which also improves the operability.

Other features and advantages of the present invention will become more apparent from the detailed description given below with reference to the drawings.

It is a side view which shows the slide device of the vehicle seat which concerns on one Embodiment of this invention, and shows a part by a virtual line, and corresponds to the cross-sectional view along the line I-I of FIG. It is sectional drawing which follows the line II-II of FIG. It is an operation explanatory view of the vehicle seat slide device shown in FIG. 1 and FIG. 2, and corresponds to the cross-sectional view taken along the line II-II of FIG.

Hereinafter, preferred embodiments of the present invention will be specifically described with reference to the drawings.

FIG. 1 is a side view showing a vehicle seat slide device A1 according to an embodiment of the present invention, and a part thereof is shown by a virtual line for easy understanding. The vehicle seat slide device A1 includes a lower rail 1 fixed to the floor F, and an upper rail 2 attached to the seat cushion 3 so as to be movable in the front-rear direction with respect to the lower rail 1. A pair of the lower rail 1 and the upper rail 2 is provided on the lower left and right sides of the seat cushion 3 on both sides in the vehicle width direction.

As shown in FIG. 2, the lower rail 1 has a pair of side wall portions 12 rising upward from both sides of the bottom wall portion 11 and the bottom wall portion 11 in the vehicle width direction, and the lower rail portion 12 within the vehicle width direction from the upper end of the side wall portion 12. A sheet metal member having a pair of upper wall portions 13 that bend in one direction and a pair of hanging wall portions 14 that bend downward from the inner edge of the upper wall portion 13, having a substantially uniform cross section and a predetermined length in the vehicle front-rear direction. It extends with a sword. The lower rail 1 is fixed to the floor F at the bottom wall portion 11.

As shown in FIG. 2, the upper rail 2 has an upper wall portion 21, a pair of side wall portions 22 hanging from both sides of the upper wall portion 21 in the vehicle width direction, and a lower rail 1 from the lower end of the pair of side wall portions 22. It is a sheet metal member having a pair of rising wall portions 23 that wrap around the lower end of the pair of hanging wall portions 14 and bend in a U-shaped cross section, and has a substantially uniform cross section and has a predetermined length in the vehicle front-rear direction. Has and extends. The upper rail 2 is attached to the seat cushion 3 at the upper wall portion 21.

The lower rail 1 and the upper rail 2 are combined so as to be slidably movable in the front-rear direction, that is, along their longitudinal directions by a linear bearing structure (not shown) formed at appropriate positions in their longitudinal directions.

A lock mechanism 4 described below is provided on one or both of the left and right sides of the pair of the lower rail 1 and the upper rail 2 provided in pairs on the left and right.

The lock mechanism 4 has a plurality of engaging holes 141 arranged in the lower rail 1 in the front-rear direction, a handle 5 attached to the upper rail 2, and a lock which is also attached to the upper rail 2 and is unlocked by operating the handle 5. It has a member 6.

In the present embodiment, the plurality of engaging holes 141 each have the same rectangular shape, and are formed in the hanging wall portion 14 of the lower rail 1.

The handle 5 is a metal member having an operation portion 51 facing the front portion of the seat cushion 3 and extending the inside of the upper rail 2 toward the rear, and a rotation axis 52 extending in the vehicle width direction at the rear end portion 5a. It is supported so that it can be rotated in the vertical direction around the center. The handle 5 is formed in the intermediate portion in the longitudinal direction with an acting portion 53 for abutting the input portion 61 of the lock member 6 to be described in detail from below and transmitting an operating force to the lock member 6.

The lock member 6 is rotatably supported in the vehicle width direction about a rotation axis 62 extending in the vehicle front-rear direction. In the present embodiment, the lock member 6 is a sheet metal member that extends inside the upper rail 2 in the front-rear direction of the vehicle, and the action portion 53 of the handle 5 abuts on the front portion of the plate-shaped main body portion 60 from below. An input portion 61 that receives an operating force from the handle 5 is provided, and a lock claw 63 that can be engaged with the plurality of engaging holes 141 formed in the lower rail 1 from the inside to the outside in the vehicle width direction is provided at the rear portion. It is provided. In the present embodiment, the lock claws 63 are formed side by side at the same pitch as the formation pitch of the plurality of engagement holes 141 so that they can engage with the four engagement holes 141 adjacent to each other in the front-rear direction.

In the present embodiment, a support shaft 62a extending in the vehicle front-rear direction is supported on the upper wall portion 21 of the upper rail 2 so as to be axially immovable and axially rotatable, and the support shaft 62a is extended above the lock member 6. By connecting the stays 641 and 642, as described above, the lock member 6 is rotatably supported in the vehicle width direction about the rotation axis 62 extending in the vehicle front-rear direction. In the present embodiment, the lock member 6 is supported by the support shaft 62a via the stays 641 and 642 at two front and rear positions, but the stays 641 and 642 are passed through the upper wall portion 21 of the upper rail 2. Through hole 211 will be formed.

By the way, in the present invention, regarding the position of the lock member 6 in the front-rear direction of the vehicle, the rotation shaft is located at a position corresponding to the input portion 61 or its vicinity and a position corresponding to the lock claw 63 or its vicinity. The greatest feature is that it is connected to the core 62, that is, the support shaft 62a. That is, in the formation of the lock member 6, the front stay 641 is formed as close as possible to the input portion 61 in the vehicle front-rear direction, the rear stay 642 is formed as close as possible to the lock claw 63, and these stays 641 and 642 are rotated. It is connected to the support shaft 62a as the driving axis 62.

2 and 3 are explanatory views in a vehicle front-rear direction view showing the relationship between the rotation axis 62 of the lock member 6, the input portion 61, the lock claw 63, and the engagement hole 141 of the lower rail 1. Regarding the handle 5, only the working portion 53 is shown by a virtual line.

The rotation axis 62 of the lock member 6 is arranged near the hanging wall portion 14 of the lower rail 1 provided with a plurality of engaging holes 141 in the upper wall portion 21 of the upper rail 2, and is a plate-shaped main body portion of the lock member 6. The 60 extends inside the upper rail 2, and the lock claw 63 is formed so as to project from the plate-shaped main body 60 in the vehicle width direction. The input portion 61 is formed so as to protrude from the plate-shaped main body portion 60 in a direction opposite to the protruding direction of the lock claw 63 above the lock claw 63. As shown in FIG. 3, the side wall portion 22 of the upper rail 2 is formed with a through hole 221 for projecting the lock claw 63 from the inside of the upper rail 2 to the outside. Further, the lock claw 63 is attached to the plate-shaped main body 60 so that the lock member 6 does not interfere with the edge of the engagement hole 141 of the lower rail 1 when the lock member 6 is rotated and can be smoothly engaged and disengaged from the engagement hole 141. On the other hand, it is formed so as to protrude at an acute angle. That is, when the lock member 6 takes the lock position shown in FIG. 2, the lock claw 63 is formed so as to project so that the base end is slightly lower than the tip end. As described above, the input portion 61 is formed in the front portion of the lock member 6, and the lock claw 63 is formed in the rear portion of the lock member 6.

In the lock member 6, as shown in FIG. 2, the lock position where the lock claw 63 engages with the engagement hole 141 and, as shown in FIG. 3, the lock claw 63 does not engage with the engagement hole 141 of the lower rail 1. It is rotatable about the rotation axis 62 (support shaft 62a) between the lock release position and is urged to always rotate toward the lock position by an elastic member (not shown).

Next, the operation of the vehicle seat slide device A1 having the above configuration will be described.

Normally, the lock member 6 is in the locked position. As shown in FIG. 2, the lock claw 63 at this time is engaged with any four of the plurality of engaging holes 141 of the lower rail 1, and the upper rail 2 and the seat cushion 3 are positioned at desired positions in the front-rear direction. , Locked so that it cannot move in the front-back direction.

When the operating portion 51 of the steering wheel 5 is pulled upward, the steering wheel 5 rotates upward about the rotation axis 52 extending in the vehicle width direction, and the acting portion 53 of the steering wheel 5 is accompanied by the input of the lock member 6. It contacts the portion 61 from below and pushes it up. Then, as shown in FIG. 3, the lock member 6 is rotated to the unlocked position about the rotation axis 62 extending in the front-rear direction of the vehicle, and the lock claw 63 is disengaged from the engagement hole 141. In this state, the upper rail 2 and the seat cushion 3 can move in the front-rear direction. When the upper rail 2 and the seat cushion 3 are moved to desired positions in the front-rear direction to release the pulling force to the handle 5, the handle 5 rotates downward, the lifting force of the lock member 6 to the input portion 61 is also released, and the lock member is released. 6 is rotated to the lock position shown in FIG. 2 by the elasticity of an elastic member (not shown), the lock claw 63 engages with the engagement hole 141, and the upper rail 2 and the seat cushion 3 are again at the selected front-rear position. Locked immovably.

In the above action, since the input portion 61 of the lock member 6 is provided higher than the lock claw 63, a sufficient amount of movement of the lock claw 63 in the unlocking direction is compared with the lifting amount with respect to the input portion 61. Can be secured, and a reliable unlock operation can be performed.

Further, since the operating force to the handle 5 is directly transmitted to the lock member 6, the intermediate link member between the handle 5 and the lock member 6 can be omitted, and the number of member points is reduced. In addition, the play that occurs in the transmission of the operating force between the members does not overlap more than necessary, and a direct operating feeling can be obtained.

Further, since the lock member 6 is supported by the support shaft 62a at least two places in the front-rear direction, the input portion 61 or its vicinity receiving the operating force from the handle 5 and the lock claw 63 or its vicinity, the lock member 6 is supported. Even in the case where the length in the front-rear direction of 6 has to be relatively long, it is possible to rotate the rotation axis 62 with less rattling, which also improves the operability. To do.

Of course, the present invention is not limited to the above-described embodiment, and all design changes within the scope of the claims are included in the scope of the present invention.

For example, in order to make the lock member 6 rotatable about the rotation axis 62, in the embodiment, the support shaft 62a is supported on the upper rail 2 so as not to be movable in the axial direction and axially rotatable, and the support shaft 62a is supported by the support shaft 62a. Although the lock member 6 is supported, the support shaft 62a may be fixedly provided and the lock member 6 may be rotatably supported with respect to the support shaft 62a.

Further, in the embodiment, the stays 641 and 642 for supporting the lock member 6 on the support shaft 62a are provided at two places, but three or more places may be provided. However, as described above, the two stays 641 and 642 may be provided at positions as close as possible to the input portion 61 and as close as possible to the lock claw 63 in the vehicle front-rear direction.

A1 Vehicle seat slide device F Floor 1 Lower rail 11 Bottom wall part 12 Side wall part 13 Upper wall part 14 Hanging wall part 141 Engagement hole 2 Upper rail 21 Upper wall part 211 Through hole 22 Side wall part 221 Through hole 23 Standing wall part 3 Seat cushion 4 Lock mechanism 5 Handle 5a Rear end 51 Operation part 52 Rotating shaft center 53 Acting part 6 Lock member 60 Plate-shaped main body 61 Input part 62 Rotating shaft center 62a Support shaft 63 Lock claw 641 Stay (front)
642 stay (rear)

Claims (1)

The lower rail is provided with a lower rail fixed to the floor and an upper rail that is attached to the seat cushion and is movable in the front-rear direction with respect to the lower rail. The lower rail is formed with a plurality of engagement holes arranged in the front-rear direction. The upper rail has a handle that can rotate around a rotation axis extending in the vehicle width direction, and a handle that can rotate around a rotation axis extending in the front-rear direction in the locking direction and the unlocking direction. Yes, it has a lock claw that can rotate in the lock direction and engage with a selected one of the plurality of engagement holes, and the operating force to the handle is transmitted to rotate the handle in the unlock direction. It is a sliding device for a vehicle seat to which a lock member is attached.
The lock member is a rotation shaft extending in the front-rear direction at least at a position in the front-rear direction corresponding to the input portion or its vicinity receiving an operating force from the handle and a position in the front-rear direction corresponding to the lock claw or its vicinity. A vehicle seat slide device characterized by being supported by the heart.

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